private void populateFromMWSException(MwsException e)
{
if (e.StatusCode != null)
{
this.statusCode = (int)e.StatusCode;
}
if (e.Message != null)
{
this.message = e.Message;
}
if (e.errorCode != null)
{
this.errorCode = e.ErrorCode;
}
if (e.errorType != null)
{
this.errorType = e.ErrorType;
}
if (e.detail != null)
{
this.detail = e.Detail;
}
if (e.xml != null)
{
this.xml = e.XML;
}
if (e.ResponseHeaderMetadata != null)
{
this.rhmd = e.ResponseHeaderMetadata;
}
}
/// <summary>
/// Initializes exception with information available from the service plus from an exception
/// Needed for backwards compatibility
/// </summary>
/// <param name="statusCode">HTTP status code for error response (as an int)</param>
/// <param name="message">Error message from HTTP header</param>
/// <param name="errorCode">Error code from response XML</param>
/// <param name="errorType">Error type from response XML</param>
/// <param name="xml">Compete XML found in response</param>
/// <param name="rhmd">Response header information</param>
/// <param name="cause">Wrapped exception</param>
public MwsException(int statusCode, string message, string errorCode, string errorType, string xml, MwsResponseHeaderMetadata rhmd, Exception cause)
: base()
{
this.statusCode = statusCode;
this.rhmd = rhmd;
this.xml = xml;
this.errorType = errorType;
this.errorCode = errorCode;
this.message = message;
if (xml != null)
{
populateFromXML(xml);
}
if (cause is MwsException)
{
populateFromMWSException((MwsException)cause);
}
}
/// <summary>
/// Creates a MwsCall and sends the request
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="type"></param>
/// <param name="requestData"></param>
/// <returns></returns>
public T Call <T>(IMwsRequestType <T> type,
IMwsObject requestData) where T : IMwsObject
{
IMwsReader responseReader = null;
try
{
string servicePath = type.ServicePath;
string operationName = type.OperationName;
IMwsCall mc = NewCall(servicePath, operationName);
requestData.WriteFragmentTo(mc);
responseReader = mc.invoke();
MwsResponseHeaderMetadata rhmd = mc.GetResponseMetadataHeader();
T response = MwsUtil.NewInstance <T>();
type.SetResponseHeaderMetadata(response, rhmd);
response.ReadFragmentFrom(responseReader);
return(response);
}
catch (Exception e)
{
throw type.WrapException(e);
}
}
public MwsResponseHeaderMetadata(MwsResponseHeaderMetadata rhmd)
: this(rhmd.RequestId, rhmd.ResponseContext, rhmd.Timestamp, rhmd.QuotaMax, rhmd.QuotaRemaining, rhmd.QuotaResetsAt)
{
}
/// <summary>
/// Initializes exception with information available from the service
/// </summary>
/// <param name="statusCode">HTTP status code for error response (as an int)</param>
/// <param name="message">Error message from HTTP header</param>
/// <param name="errorCode">Error code from response XML</param>
/// <param name="errorType">Error type from response XML</param>
/// <param name="xml">Compete XML found in response</param>
/// <param name="rhmd">Response header information</param>
public MwsException(int statusCode, string message, string errorCode, string errorType, string xml, MwsResponseHeaderMetadata rhmd)
: this(statusCode, message, errorCode, errorType, xml, rhmd, null)
{
}
/// <summary>
/// Creates a request and invokes it
/// </summary>
/// <returns></returns>
/// <exception cref="MwsException">Exceptions from invoking the request</exception>
public IMwsReader invoke()
{
string responseBody;
string message;
HttpStatusCode statusCode = default(HttpStatusCode);
/* Add required request parameters */
AddRequiredParameters();
string queryString = GetParametersAsString(this.parameters);
int retries = 0;
do
{
/* Submit the request and read response body */
try
{
this.request = this.connection.GetHttpClient(this.serviceEndPoint.URI);
byte[] requestData = new UTF8Encoding().GetBytes(queryString);
this.request.ContentLength = requestData.Length;
using (Stream requestStream = this.request.GetRequestStream())
{
requestStream.Write(requestData, 0, requestData.Length);
}
using (HttpWebResponse httpResponse = this.request.GetResponse() as HttpWebResponse)
{
statusCode = httpResponse.StatusCode;
message = httpResponse.StatusDescription;
this.ResponseHeaderMetadata = GetResponseHeaderMetadata(httpResponse);
StreamReader reader = new StreamReader(httpResponse.GetResponseStream(), Encoding.UTF8);
responseBody = reader.ReadToEnd();
}
if (statusCode == HttpStatusCode.OK)
{
return(new MwsXmlReader(responseBody));
}
MwsException e = new MwsException((int)statusCode, message, null, null, responseBody, this.ResponseHeaderMetadata);
if (statusCode == HttpStatusCode.InternalServerError)
{
if (PauseIfRetryNeeded(retries++))
{
continue;
}
}
throw e;
}
/* Web exception is thrown on unsuccessful responses */
catch (WebException we)
{
using (HttpWebResponse httpErrorResponse = (HttpWebResponse)we.Response as HttpWebResponse)
{
if (httpErrorResponse == null)
{
throw new MwsException(we);
}
statusCode = httpErrorResponse.StatusCode;
using (StreamReader reader = new StreamReader(httpErrorResponse.GetResponseStream(), Encoding.UTF8))
{
responseBody = reader.ReadToEnd();
}
}
//retry logic
if (PauseIfRetryNeeded(retries++))
{
continue;
}
throw new MwsException((int)statusCode, null, null, null, responseBody, null);
}
/* Catch other exceptions, attempt to convert to formatted exception,
* else rethrow wrapped exception */
catch (Exception e)
{
throw new MwsException(e);
}
} while (true);
}